Eagle Chrysler RB Crankshafts Forged 4340 Steel 4.150in Stroke 2.375in Rod Journals

When you're building a high-performance Chrysler RB engine and need a crankshaft that can handle serious power, Eagle's forged 4340 steel crankshaft is a solid choice. This crankshaft is designed to replace the stock unit and is built to withstand the rigors of performance applications, ensuring reliable operation when you push your engine hard. It features a 4.150-inch stroke, which is a common choice for increasing displacement and torque in RB engines, paired with 2.375-inch rod journals that are standard for many performance connecting rods.

Eagle starts with a non-twist forging of 4340 steel, a material known for its strength and durability, which is crucial for a crankshaft that experiences immense torsional forces. The fillet radii at the base of the journals are .125-inch, a detail that significantly boosts strength by reducing stress risers, though it means you'll need chamfered or narrowed bearings to fit properly. To further enhance its resilience and wear resistance, this crankshaft receives a nitrided surface treatment and a micropolished finish. This combination of advanced materials and treatments makes it well-suited for engines that demand the utmost in reliability and performance.

This crankshaft is intended for performance builds where the stock component might not be sufficient. Ensure you have the correct chamfered or narrowed bearings to match the .125-inch fillet radii for proper installation and longevity. If you're aiming for a powerful and dependable RB engine, this Eagle crankshaft is a key component to consider.